Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
  • C09C3/12—Treatment with organosilicon compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0241—Containing particulates characterized by their shape and/or structure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/11—Encapsulated compositions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/27—Zinc; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/29—Titanium; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
  • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
  • A61K8/585—Organosilicon compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
  • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/12—Face or body powders for grooming, adorning or absorbing
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
  • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/04—Compounds of zinc
  • C09C1/043—Zinc oxide
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/28—Compounds of silicon
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/36—Compounds of titanium
  • C09C1/3607—Titanium dioxide
  • C09C1/3669—Treatment with low-molecular organic compounds
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/36—Compounds of titanium
  • C09C1/3607—Titanium dioxide
  • C09C1/3684—Treatment with organo-silicon compounds
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/36—Compounds of titanium
  • C09C1/3692—Combinations of treatments provided for in groups C09C1/3615 - C09C1/3684
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
  • C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
  • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/60—Particulates further characterized by their structure or composition
  • A61K2800/61—Surface treated
  • A61K2800/62—Coated
  • A61K2800/623—Coating mediated by organosilicone compounds
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2006/00—Physical properties of inorganic compounds
  • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
  • C01P2006/62—L* (lightness axis)
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2006/00—Physical properties of inorganic compounds
  • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
  • C01P2006/65—Chroma (C*)
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/02—Compounds of alkaline earth metals or magnesium
  • C09C1/028—Compounds containing only magnesium as metal

Definitions

• the present invention relates to a lipophilically surface-treated powder exhibiting easy dispersibility, and improved feeling in finished cosmetics, improved makeup effects and stability improved by using the surface-treated powder.
• the primary particle sizes are set to particle sizes of several micrometers in a geometrically optical range; in order to exhibit a shielding power and a coloring power, they are set to particle sizes of near half wavelengths of visible light rays, that is, Mie scattering range; and in order to exhibit an ultraviolet ray shielding power, they are set to particle sizes of a Rayleigh scattering range considerably smaller than the wavelengths of the visible light rays.
• Patent Document 1 JP-A 08-104606
• Patent Document 2 JP-A 2001-181136
• Patent Document 3 JP-A 09-268271
• Patent Document 4 JP-B 06-59397
• Patent Document 5 JP-A 2002-80748
• the dispersed state in other words, the aggregated state of the powder differs depending upon the type, the treating amount, and the combination of the lipophilically surface treating agent.
• the surface-treating agent has a functional group, and when the powder is treated with a compound which causes polycondensation on reacting a base material of the powder or a compound solidifying at ordinary temperature, an aggregate or an agglomerate of the powder particles are induced.
• methyl hydrogen polysiloxane which has been conventionally used as a surface-treating agent for the cosmetic powders, is resinified through hydrolysis under the presence of OH groups and water at the surface of the inorganic powder particles, so that the surfaces of the particles are coated therewith. At that time, there is a problem that the aggregation occurs, so that easy dispersability cannot be obtained (Patent Documents 1 and 3).
• a powder is treated by melting such a surface-treating agent at a temperature of not less than the melting point, or alternatively it is saponified and dissolved into an aqueous slurry containing a powder and the surface treatment is carried out through the formation of a polyvalent metal salt.
• the treatment with the solid material at ordinary temperatures is likely to cause aggregation and the dispersability is not good (Patent Document 4 and Patent Document 5).
• the present invention is aimed at providing a lipophilically surface-treated powder, which can be easily dispersed even with weak mixing and stirring force with a Henschel mixer, a propeller mixer, a disperser mixer or the like, even in a powder-mixing system or a liquid-mixing system.
• the present invention is aimed at providing a cosmetic into which such a surface-treated powder is mixed and which is excellent in usability, cosmetic effects and cosmetic stability.
• R 1 s which are all mutually independent, denote a lower alkyl group having 1 to 4 carbon atoms or a hydrogen atom, respectively
• R 2 denotes any of an amino group, a hydrogen atom, a hydroxyl group and a lower alkoxy group having 1 to 4 carbon atoms
• p is an integer of 1 to 300.
• a surface-treating agent composed of a mixture (A+B) - - - ” includes not only “a surface-treating agent composed of only a mixture (A+B) - - - ” but also “a surface-treating agent composed of a mixture (A+B+C and the like) containing C and the like other than (A+B) and not losing the effects of the present invention”.
• the present invention is further directed to a cosmetic into which any of the surface-treated powders set forth in the above.
• the surface-treated powder according to the present invention is obtained in a state nearer to the primary particle sizes by surface-treating a powder to be surface-treated, such that the powder is surface-coated with the surface-treating agent in which, (A) the alkyl alkoxy silane expressed by the following general formula (1) and (B) one kind or two or more kinds of the above-specified compounds are combined. Since the obtained surface-treated powder exhibits easy dispersability, it can be easily dispersed in any form of powder-mixing systems and liquid-mixing systems. As a result, the surface-treated powder is excellent for example in terms of shielding power, a coloring power, an ultraviolet ray scattering effect, transparency, optical characteristics, adhesion to skin, touch, etc. In addition, the cosmetics into which the above powder is mixed provides improved makeup effects, and stability.
• the powder to be used in the present invention may be any of an inorganic powder and an organic powder, and the inorganic powder is preferably used.
• the surface-treated powder according to the present invention is suitable particularly as a surface-treated powder for cosmetic uses, but the powder is not particularly limited, so long as it can be usually used as a powder to be used in the cosmetics.
• the powder can be boron nitride, sericite, natural mica, incinerated mica, synthetic mica, synthetic sericite, alumina, mica, talc, kaolin, bentonite, smectite, calcium carbonate, magnesium carbonate, calcium phosphate, silicic anhydride, magnesium oxide, tin oxide, iron oxide, yttrium oxide, chromium oxide, titanium dioxide, zinc oxide, cerium oxide, aluminum oxide, magnesium oxide, chromium hydroxide, iron blue, ultramarine blue, calcium phosphate, aluminum hydroxide, barium sulfate, magnesium sulfate, silicic acid, aluminum magnesium silicate, calcium silicate, barium silicate, magnesium silicate, aluminum silicate, strontium silicate, silicon carbide, magnesium fluoride, tungstic acid metal salts, magnesium aluminate, magnesium methasilicate aluminate, chlorohydroxy aluminum, clay, zeolite, hydroxyapatite, ceramic powder, spine
• pearl pigments such as titanium dioxide-coated mica, titanium dioxide-coated mica, titanium dioxide-coated synthetic mica, titanium dioxide-coated silica, titanium dioxide-coated synthetic mica, titanium dioxide-coated talc, zinc oxide-coated silica, titanium dioxide-coated colored mica, red iron oxide coated titanium mica, red iron oxide/black iron oxide-coated titanium mica, carmine-coated titanium mica, iron blue-coated titanium mica, and so on are recited. These powders can be used singly or in a state in which multiple powders are mixed or made into composite pigments.
• the surface-treating agent to be used in the present invention is composed of a mixture (A+B), which comprises (A) an alkyl alkoxy silane expressed by the following general formula (1) and (B) one kind of a compound or two or more kinds of compounds selected from a reactive organo silicone expressed by the following general formula (2) and a saturated or unsaturated branched fatty acid having 12 to 22 carbon atoms (including a salt form), and is used for surface-treating a powder.
• A+B which comprises (A) an alkyl alkoxy silane expressed by the following general formula (1) and (B) one kind of a compound or two or more kinds of compounds selected from a reactive organo silicone expressed by the following general formula (2) and a saturated or unsaturated branched fatty acid having 12 to 22 carbon atoms (including a salt form), and is used for surface-treating a powder.
• (Chemical formula 3) (C n H 2n+1 ) a Si(OC m H 2m+1 ) b (1)
• R 1 s which are mutually all independent, denote a lower alkyl group having 1 to 4 carbon atoms or a hydrogen atom, respectively
• R 2 denotes any of an amino group, a hydrogen atom, a hydroxyl group and an alkoxy group having 1 to 4 carbon atoms
• p is an integer of 1 to 300.
• the above alkyl alkoxy silane has a function to provide the surface-treated powder with an excellent pigment dispersion power
• the above reactive organo silicone has a function to provide the powder with excellent easy dispersability through composite treatment with the alkyl alkoxy silane
• the above saturated or unsaturated branched fatty acid has a function to improve adhesion to an organic material such as to the skin, etc.
• the number of n in the formula (1) of the alkyl alkoxy silane to be used in the present invention is preferably 1 to 8.
• methyl triethoxy silane, hexyl triethoxy silane and octyl triethoxy silane are recited. It is a tendency that the greater the number of n, the lesser the pigment dispersability. From the standpoint to ensure the reactivity with the surface of the powder, the number of m in the formula (1) is limited to 1 to 3.
• the above reactive organo silicone to be used in the present invention is preferably one having a trialkoxy group at one terminal in which p is 2 to 50.
• p is 2 to 50.
• compounds described in Japanese Patent No. 3079395 and JP-A 07-196946 are recited.
• saturated or unsaturated fatty acids having 12 to 22 carbon atoms isotridecanoic acid, isomyristic acid, isopalmitic acid, isostearic acid, behenic acid and the like (including a salt form) are recited, for example.
• the above “saturated or unsaturated branched fatty acid having 12 to 22 carbon atoms” includes metal salts of Ca, Mg, Zn, Zr, Al, Ti and the like of the branched fatty acid.
• isomyristic acid, isopalmitic acid and isostearic acid as the saturated branched fatty acids are preferable.
• the reason why the number of carbon atoms is limited to 12 or more is from the standpoint of aggregation prevention and reduction in irritating properties to the skin.
• the reason why number of carbon atoms is limited to 22 or less is from the standpoint of the adhesion to the pigment.
• the surface-treating agent which is composed of the mixture comprising the alkyl alkoxy silane and one kind of a compound or two or more kinds of compounds selected from the surface-treating agents of the reactive organo polysiloxane and the saturated or unsaturated branched fatty acid having 12 to 22 carbon atoms
• a publicly known method has only to be used.
• the powder is surface-treated by mixing and contacting the surface-treating agent to be used in the present invention with the powder for a given amount of time.
• a preferable producing method a method in which the powder is passed through a jet mill after the surface treatment.
• the following two methods are recited, for example: (1) a method in which the powder is heated and dried by passing it through the jet mill after the surface-treating agent and the powder are mixed and dispersed in a drying manner or a wet manner and (2) a method in which the powder is passed through the jet mill after the surface-treating agent and the powder are mixed and dispersed in the dry manner or the wet manner, and heated and dried.
• a pulverizer such as a pin mill, a hammer mill or the like can be used instead of the jet mill.
• a Henschel mixer As a mixing dispersion device to be used for mixing and contacting the above powder, a Henschel mixer, a ribbon blender, a Q mill, a kneader, a planetary mixer, a pony mixer, a Bumbary mixers, a ball mill, a dry-type sand mill, a wet-type sand mill, an attritor, disperser mixer, a homo mixer, an extruder and the like are recited. Further, these treatments may be carried out, while an energy such as a mechanochemical mechanical force, ultrasonic waves, plasma, flame, UV rays, electron beams, overheated steam or the like is being applied.
• an energy such as a mechanochemical mechanical force, ultrasonic waves, plasma, flame, UV rays, electron beams, overheated steam or the like is being applied.
• the powder is dried at a temperature of 100° C. to 170° C. for 3 hours to 20 hours, for example.
• the easy dispersability is further enhanced by pulverizing the surface-treated powder by using the jet mill pulverizer after mixing and contacting the above powder.
• the jet mill is broadly classified into a flowing layer type, a spiral type, a jet automizer type and the like. Although any type may be used, the flowing layer type which can uniformly and effectively carry out the treatment is most preferable.
• a jet stream is ejected through one or plural ejecting holes or ejecting nozzles provided inside the pulverizer.
• a gas to be used as the jet stream air, a nitrogen gas, a helium gas, steam and the like are recited, and it may be selected depending upon the powder to be treated and the properties of the surface-treating agent.
• the lipophilically surface-treated powder of the present invention exhibiting the easy dispersability can be excellently accomplished by the combined process of the pulverization with the jet mill and the surface treatment with the surface-treating agent composed of the mixture of the alkyl alkoxy silane and one kind of a compound or two or more kinds of compounds selected from the reactive organo polysiloxane and the saturated or unsaturated branched fatty acid having 12 to 22 carbon atoms.
• the mixing ratio between the powder to be treated and the surface-treating agent is preferably 1 to 30 parts by weight of the surface-treating agent for 100 parts by weight of the powder.
• the mixing ratio among two or more kinds of the treating agents in (B) is not particularly limited. Although it differs depending upon the kind of the powder, the sizes, the specific surface area, the oil absorption amount, etc. of the primary particles, the easy dispersibility tends to decrease if the ratio exceeds these ones.
• the lipophilically surface-treated powder according to the present invention is mixed.
• the formulations of the cosmetics for example, conventionally publicly known formulations such as an emulsion form, a creamy form, a solid form, a paste form, a gel form, a powdery form, a multilayer from, a moose form, a spray form, etc. can be selected.
• a lipophilically treated talc and a pigment-grade titanium oxide are mixed or made composite.
• the lipophilically treated fine particles of titanium dioxide and the lipophilically treated pigment-grade zinc oxide may be mixed or made composite.
• No particular limitation is made upon the mixing or composite method at this time. For example, a method in which they are mixed or made composite in a dried or wet manner by using the above mixing dispersion device, a method in which the mixed or composite powder is obtained by the spray drier after the mixing in the wet manner, and the like are recited.
• a liquid or solid component usable in the cosmetics may be added as a fixing agent.
• the surface-treated inorganic powders thus obtained can be applied as powders to be used as powders, which are widely used in various fields of not only the cosmetics but also a plastic additive, an ink, a painting material, a toner (magnetic powder), chemical fibers, a wrapping material, an electronic material and the like
• a lipophilically surface-treated powder was obtained by the same method as in Example 1 except that the fine particulate titanium oxide was replaced by fine particulate zinc oxide (manufactured by TAYCA Corporation: MZ-500).
• a lipophilically surface-treated powder was obtained by pulverizing with a jet mill under the condition of a pulverizing pressure of 5 kg and a classifying number of rotations of 10,000 rpm.
• a lipophilically surface-treated powder was obtained by drying at 110° C. for 9 hours with the hot air drying machine.
• a lipophilically surface-treated powder was obtained by surface-treating each of yellow iron oxide (manufactured by Titan Kogyo, Ltd.: Yellow LL-100P), red iron oxide (manufactured by Titan Kogyo, Ltd.: Red R-516PS) and black iron oxide (manufactured by Titan Kogyo, Ltd.: Black BL-100P) according to the same method.
• Each lipophilically surface-treated powder was obtained under the same producing condition as in Example 4 except that the jet mill was replaced by an atomizer.
• a lipophilically surface-treated powder was obtained by pulverizing with the jet mill (manufactured by Deutsch Alpine: 100AFG type) under the condition of a pulverizing pressure of 5 kg and a classifying number of rotations of 5,000 rpm.
• sericite manufactured by Sanshin Koko Co., Ltd.: FSE
• a lipophilically surface-treated powder was obtained by the same producing method.
• a surface-treated powder was obtained by the same producing condition as in Example 1 except that the surface-treating agent was 300 g of octyl triethoxy silane only.
• a surface-treated powder was obtained by the same producing condition as in Example 2 except that the surface-treating agent was 300 g of the reactive organo silicone only.
• Example 1 With respect to Example 1, Example 3, Example 4, Example 5 and Example 6 described in JP-A 2002-80748, each of MiBrid-treated powders was obtained by using the materials of the surface-treated powders shown in Examples in the present invention.
• test evaluation systems were according to two standards of a liquid system and a powder system, and further classified into three: evaluation of a body pigment having primary particle sizes in a geometrically optical range, evaluation of a color pigment having primary particle sizes in a Mie scattering range and evaluation of finely particulate powder having particle sizes in a Rayleigh scattering range according to the primary particle diameter of each of the starting raw materials.
• “part” means “part by weight”.
• cyclomethicone manufactured by Shin-Etsu Chemical Co., Ltd.: KF995
• 2 parts of an alkyl-modified polyether silicone Shin-Etsu Chemical Co., Ltd.: KF-6038
• 10 parts of a surface-treated powder was added under stirring at a number of rotations of 3000 rpm.
• 40 parts of water was added thereto, and an emulsion was prepared by further stirring the resultant in the disperser at the number of rotations of 3000 rpm for 3 minutes.
• This emulsion was coated onto a TAC transparent film by a bar coater #3. After drying at room temperature for 3 hours, an in-vitro SPF value was measured by an SPF analyzer (manufactured by Optometric, Inc.: SPF-290), and a 560 nm transmittance was measured by a spectral photometer (UV-3150 manufactured by Shimadzu Corporation).
• SPF analyzer manufactured by Optometric, Inc.: SPF-290
• UV-3150 manufactured by Shimadzu Corporation
• a disperser Into a disperser were charged 63 parts of cyclomethicone (manufactured by Shin-Etsu Chemical Co., Ltd.: KF995) and 2 parts of an alkyl-modified polyether silicone (manufactured by Shin-Etsu Chemical Co., Ltd.: KF-6038), 20 parts of a surface-treated powder was charged thereinto, while being stirred at a number of rotation of 3000 rpm. After the resultant was further stirred in the disperser at a number of rotation of 3000 rpm for 3 minutes, 15 parts of water was added thereto, and an emulsion was prepared by still stirring the resultant in the disperser at a number of 3000 rpm for 3 minutes.
• This emulsion was coated onto a paper for testing opacity by the bar coater #3, and after drying at room temperature for 3 hours, color measurements of brightness (L* value) and a chroma (C* value) (Nippon Denshokusha Industries, Co., Ltd.: SZ- ⁇ 90) and luster (Nippon Denshokusha Industries, Co. Ltd.: GC- ⁇ 90) were effected.
• L* value brightness
• C* value chroma
• luster Nippon Denshokusha Industries, Co. Ltd.: GC- ⁇ 90
• talc manufactured by Asada Milling, Co., Ltd.: JA-46R
• a surface-treated powder which were mixed and stirred for 10 seconds to obtain an evaluation sample.
• a surface-treated powder In a case of evaluating titanium dioxide, 1 g of non-treated black iron oxide was further added and mixed into the above mixture. Brightness and chroma of each sample were measured.
• a disperser Into a disperser were charged 63 parts of cyclomethicone (Shin-Etsu Chemical Co., Ltd.: KF995) and 2 parts of an alkyl-modified polyether silicone (Shin-Etsu Chemical Co., Ltd.: KF-6038), and 20 parts of a surface-treated powder was charged thereinto, while being stirred at a number of rotations of 3000 rpm. After the resultant was further stirred in the disperser at a number of rotations of 3000 rpm for 3 minutes, 15 parts of water are added thereinto, which was further stirred in the disperser at a number of rotations of 3000 rpm for 3 minutes, thereby obtaining an emulsion.
• This emulsion was coated onto a TAC transparent film by a bar coater #3, and a luster value (Nippon Denshokusha Industries, Co. Ltd.: GC- ⁇ 90) was measured after drying at room temperature for 3 hours.
• Example 1 Example 2
• Example 3 Com.
• Ex. 4 Ex. 5 SPF value 15.2 8.4 19.7 4.5
• Ex. means Comparative Example
• the lipophilically surface-treated powders of the present invention have excellent SPF values and transparency, and the mixing ratio between the powder to be treated and the surface-treating agent are that the surface-treating agent is 1 to 30 parts by weight relative to 100 parts by weight of the powder.
• Example 1 Example 2
• Example 3 Com.
• Ex. 1 Ex. 2 SPF value 16.0 7.7 18.6 4.1 3.5
• the lipophilically surface-treated powders of the present invention have excellent SPF values, and are better in the easy dispersability as compared with the prior art products.
• the lipophilically surface-treated pigment-grade powders according to the present invention have excellent coloring power and luster, and are better in ease of dispersion as compared with the prior art products,
• the lipophilic surface-treated pigment-grade powders according to the present invention have excellent coloring power, and are better in the easy dispersability as compared with the prior art products,
• the lipophilically surface-treated pigment-grade powders according to the present invention have excellent luster, and are better in the ease of dispersibility as compared with the prior art product,
• a powder foundation having a composition shown in Table 7 was produced by a below-mentioned method.
• the above ingredients (1) to (5) were mixed in a Henschel mixer. After this was transferred into a high-speed mixer, a composition of ingredients (6) to (10) homogenized by mixing under heating was added thereto, which was homogenized by further mixing. After the resultant was passed through a pulverizer and particle sizes were made uniform by sieving, a 2-way powder foundation was produced in an aluminum dish by compression molding under a surface press pressure of 12 MPa.
• the cosmetic into which the lipophilically surface-treated powder was mixed was better in make-up effect, and stability as compared with prior art product.
• a W/O liquid foundation having a composition shown in Table 8 was produced by the following method.
• Example 2 Ingredients Weight part (1) Decamethyl cyclopentasiloxane 25.0 (2) Dextrin Fatty Acid Ester 0.5 (3) Methylphenyl polysiloxane 2.3 (4) Squalene 4.2 (5) Isotridecyl isononanoate 4.5 (6) Polyether-modified silicone (Shin-Etsu 3.0 Chemical Co., Ltd.: KF-6017) (7) Red iron oxide (Example 4 and Com. Ex. 3) 1.3 (8) Yellow iron oxide (Example 4 and Com. Ex. 3) 2.4 (9) Black iron oxide (Example 4 and Com. Ex. 3) 0.1 (10) Titanium dioxide (Example 4 and Com. Ex.
• the above ingredients (7) to (11) were preliminarily mixed and pulverized.
• the preliminarily pulverized mixture of the ingredients (7) to (11) was added into an oily phase in which ingredients (1) to (6) were dissolved and mixed at 70° C., and the resultant was uniformly dispersed by a homodisperser.
• An aqueous phase in which ingredients (12) to (16) were homogeneously mixed and dissolved at 70° C. was gradually added into the above oily phase, which was uniformly dispersed by a homomixer, and thereafter a liquid foundation was produced by making uniform emulsified particles with addition of an ingredient (17).
• An emulsion type sunscreen cream having a composition shown in Table 9 was produced by the below-mentioned method.
• Example 3 Ingredient Weight Part 1. Volatile liquid isoparaffin (Isohexadecane) 15.0 2. Dimethicone (6cs) 2.0 3. Isotridecyl isononanoate 3.5 4. Cetanol 1.0 5. Squalane 5.0 6. Polyethylene glycol monostearate (4EO) 1.0 7. Hexaglyceryl polyricinoleate 3.5 8. Finely particulate titanium dioxide/isododecane 10.0 dispersion*1 (Example 1 and Com. Exam. 1) 9. Purified water Balance 10. Glycerin 5.0 11. 1,3-butylene glycol 5.0 12. Soda pyrrolidonecarboxylate 2.5 13. Antiseptic Approp. amount 14. Perfume Approp.
• the In-vitro SPF value of the cosmetic into which the lipophilically surface-treated powder was mixed was 23, and that of the prior art product was 17. Further, the cosmetic into which the lipophilically surface-treated powder was mixed had excellent usability, make-up effects and stability.
• a powder foundation having a composition shown in Table 10 was produced by the following method.
• Example 4 Ingredient Part by weight (1) Sericite (Example 6 and Com. Ex. 3) to 100.0 (2) Titanium dioxide (Example 4 and Com. Ex. 3) 8.5 (3) Yellow iron oxide (Example 4 and Com. Ex. 3) 3.5 (4) Red iron oxide (Example 4 and Com. Ex. 3) 1.8 (5) Black iron oxide (Example 4 and Com. Ex. 3) 0.2 (6) Composite powder of non-treated talc/finely 20.0 particulate zinc oxide (Example 2 and Com. Ex. 2)*2 (7) Octyldodecyl oleate 3.0 (8) Squalane 4.0 (9) Dimethyl polysiloxane 1.5 (10) Antiseptic Approp. amount (11) Perfume Approp.
• the above ingredients (1) to (6) were mixed and pulverized by passing them through a pulverizer.
• the resultant was transferred to a high-speed blender, and a mixture in which ingredients (7) to (11) were heated, mixed and homogenized was added thereinto, which was homogenized by further mixing.
• a UV cut powder foundation was produced in an aluminum dish at a surface press pressure of 10 MPa by compression molding.
• the In-vitro SPF value of the cosmetic into which the lipophilically surface-treated powder according to the present invention was mixed was 15, and that of a prior art product was 7.
• the cosmetic into which the lipophilically surface-treated powder was mixed was excellent in usability, make-up effects and stability.

Applications Claiming Priority (3)

Publications (2)

Family

ID=42935990

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (20)

Citations (14)

Family Cites Families (1)

• 2009
  • 2009-04-07 JP JP2009092709A patent/JP4869377B2/ja active Active
• 2010
  • 2010-03-31 WO PCT/JP2010/002400 patent/WO2010116692A1/ja active Application Filing
  • 2010-03-31 EP EP10761398.6A patent/EP2417960B1/en active Active
  • 2010-03-31 US US13/262,893 patent/US8591925B2/en active Active
  • 2010-03-31 CN CN2010800157898A patent/CN102368993A/zh active Pending

Patent Citations (16)

Non-Patent Citations (7)

Also Published As

Similar Documents

Legal Events